Warping-machine stop-motion.



' ,236,Q1& Patented Aug. 7, 1917'.

.l. W. SIDE-BOTTOM.

WARPING MACHINE STOP. 0N. APPLICATION FILED rum s.

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JOHN W. SIDEBOTTOM, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO T. C. ENTWISTLE COMPANY, OF-LOWELL, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

WAR PING-MAGI-IINE STOP-MOTION.

Specification of Letters Patent.

Patented Aug. 7, 191?.

Application filed February 16, 1916. Serial No. 78,561.

To all whom it may concern:

Be it known that I,.JonN WV. SIDnBoT'roM, a citizen of the United States, residing at Lowell, in the county of Middlesex, State of Massachusetts, have invented a certain new and useful Improvement in Warping-Machine Stop-Motions, of which the following isa specification, reference being had therein to the accompanying drawings.

The invention is applicable to warping machine stop-motions employing swinging drop-wires that are arranged to swing, upon the breaking or failing of the yarns upon which they are hung, into a position in which the wire stemof a falling drop-wire extends lengthwise from the drop-wire pivot toward the feeler or vibrator, with its free end in the path of the. engaging member of the feeler or vibrator, so that the feeler or vibrator may be arrested in its feeling stroke by the endwise resistance of the wire stem.

It has been usual to employ in warping machine stop-motions of the class in question, in an intermediate position between the drop-wire pivot and the feeler or vibrator, a rest disposed so as to permit an intermediate portion of the length of the wire stem of a falling drop-wire to take bearing thereon, and so that through contact of the said intermediate portion of the drop-wire with the rest the stem is supported with the free end thereof in the path of the engaging member of the feeler or vibrator.

In the use of warping machine stop-motions employing a rest located intermediately as just mentioned, various troubles are experienced in practice. When the said rest happens to occupy a position a little too high, so that the free end of the wire stem of a fallen drop-wire remains above the direct line of transmission of the pressure of the feeler or vibrator against such end, the tendency is to deflect the latter upward and it may escape from the feeler or vibrator, and in the lastmentioned event the stopmotion will fail to occasion stoppage. When the rest occupies a position too low with relation to the line of pressure, which occurs sometimes in practice, the pressure of the feeler or vibrator against the free end of the fallen clrop-ygire tends to bend the wire downward around the rest, and such bending occurs at times, thereby crippling the drop-wire and rendering it useless, at least until it is straightened out, and in such event, also, the stop-motion may or will fail to occasion stoppage. Thus, whether a fixed or stationary rest is employed, or one that is movably mounted and arranged to be operated to cause it to serve also as a lifter for fallen drop-wires, improper and unsatisfactory working and injury to the drop-wires are liable to occur.

The general object of the invention is to avoid the foregoing troubles in connection with warping machine stop1notions of the class mentioned.

The invention consists in a feeler or vibrator which is arranged to cooperate with swinging drop-wires such as aforesaid, and which has combined with the portion or member thereof that engages with the free ends of the wire stems of fallen drop-wires, to bring about the arrest of the feeling movement of the feeler or vibrator, a rest for the said free ends of the said wire stems, said rest accompanying the feeler or vibrator in its movements to and fro. This moving rest is arranged to receive and support the free ends of the wire stems immediately adjacent the points of engagement of the feeler or vibrator with the said ends. Thereby absolute accuracy in the engagement of the feeler or vibrator with the ends of the wire stems is insured, so that there is no danger of the engagement taking place above the line of direct pressure with a tendency to deflect the stem upward, or too low with respect to the said line with a tendency to deflect the stem downward. For the latter reason, liability to bend and cripplc the stems, such as exists in the use of an intermediate rest, is eliminated.

The drawing shows a sectional View of certain parts of a warping machine stopmotion of ordinary construction, wit h an embodiment of the invention applied thereto. Two banks of drop-wires are shown, and the general construction accords with that number of banks. As usual, the wire stems 1, 1, of the drop-wires are provided at their free ends with the eyes 2, 2, through which the yarns are passed, and the said stems are engaged pivotally with small blocks 3, 3, applied to transversely-extending supporting rods 4, 4E. The two engaging members or blades 5, 5, of the feeler or vibrator are carried by arms 6, 6, fixed upon a rocking feeler-rockshaft 7, and 8, 8, are lifter-rods or wires, each supported by arms 9 upon a lifter-rockshaft 10 that in usual manner is adapted to be turned by the attendant to raise the lifter-rods or wires to elevate fallen drop-wires. The lifter-rods or wires 8, 8, are shown depressed entirely clear of drop-wires. The latter in turn are shown in the positions to which they fall when their yarns break or fail. It will be observed that the wire stem of the dropwire of either bank extends, as referred to at the outset hereof, lengthwise from the drop-wire pivot toward the corresponding blade 5 of the feeler or vibrator.

At 11, 11, are the rests which in accordance with the invention I combine with the feeler or vibrator members 5, 5, so as to have a fixed working relationship in connection therewith proper to receive the free end of the wire stem 1 of a fallen drop-wire, and support such end so that the direct line of pressure shall not operate to deflect the drop-wire upward and cannot bend the wire stem downward.

These rests, in the present instance, are integral with the engaging members of the feeler or vibrator, the two being constituted by the different flanges of an L-shaped strip of angle-material. The engaging member and the rest-member, however, may be separately formed and applied as deemed advisable. An advantage of the angular relationship of the rest-member with respect to the engaging member 5, is indicated in the drawing, in which it will be perceived that the pressure of the feeler or vibrator against a wire-stem end that is lying upon the rest 11 causes the said end to find its way naturally into the entrant angle formed by the engaging member 5 and the rest.

I claim as my invention 1. In a warping machine stop-motion, the combination with a reciprocating feeler or vibrator, and swinging drop-wires that are ar 'anged to swing into a position in which the stem of a fallen drop-wire extends lengthwise from the drop-wire pivot toward the feeler 0r vibrator with its free end in the path of the engaging member of the feeler or vibrator, of a rest moving with thefeeler or vibrator and on which the said free end rests in engagement with said engaging member.

2. In a warping machine stop-motion, the combination with a reciprocating feeler or vibrator, and swinging drop-wires that are arranged to swing into a position in which the stem of a fallen drop-wire extends lengthwise from the drop-wire pivot toward the feeler or vibrator with its free end in the path of the engaging member of the feeler or vibrator, of a rest moving with the feeler or vibrator, forming an entrant angle therewith, and on which the said free end rests within the said entrant angle.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN W. SIDEBOTTOM. Witnesses I CI-IAs. F. RANDALL, ELLEN 0. SPRING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

